Apparatus for unwinding loose windings of thread



May 7, 1940.

A. WILLEKE I ET AL APPARATUS FOR "UNWINDING LOOSE WINDINGS 0F THREAD Filed July 7, 1938 In vnfols Ado/fM'l/e/re and By 777a)? Aflofneys v Wilhelm Ellen PatentedMay 7, 1940 PATENT voF- CEjj WINDINGS F THREAD i Adolf Willeke, Chemnitz,',' and Wilhelm Eller,

Dessau, Germany, assignors to I. G. Farbenindustrie Aktiengesellschaft, ,Frankfort-on-the- Main, Germany Application July 7, 1938, Serial No. 217,954

In Germany July 13,1937

2 Claims.

Devices are known for unwinding directly unsupported wound bodies of textile threads, for

example ring cops, spinning cakes and the like,

which devices consist in part of a reel or bobbin and in part of a tensioning device which enables. the thread to be drawn off parallel to thev axis of the bobbin. In most cases in which the thread is drawn off parallel to the axis of the bobbin the unwinding is from outside inwards.

This invention provides apparatus which en;

ables unsupported wound bodies of textile threads, especially bodies of large circumference, to be unwound in a simple manner on any machines, for example in spinning, weaving and knitting mills, from inside without interruption and with-- out tensioning the thread. The apparatus is distinguished from known retaining and unwinding devices in which the thread is unwound from the inside in that the thread is not subjected to any rubbing, seizing or other jerky, braking action while it is in the process of being unwound, so

that a smooth and non-injurious unwinding of'the body is insured.

Reference is made to the accompanying drawing in which Fig. 1 shows a perspective cross sectional view of one form of the apparatus; whereas Fig. 2 is a perspective front'view. of the apparatus shown in cross section in Figure Fig. 3 is a perspective cross-sectional view of another form of the apparatus.

In the drawing identical reference numerals designate similar parts.

The apparatus illustrated by way of example in Fig. 1 consists essentially of a pot-shaped protective container l for holding wound thread 9, an upright conical core 2, a second cone 5, the inner surface of which is covered with fur, velvet or the like 6, and which has a perforation 8 at its apex for the passage of thread 9. Conical core 2 is of polished material and at its base corresponds in diameter with the internal diameter of the wound body of fibers 9. Cone is shorter than conical core 2 and is placed over the latter. At its base cone 5 has an annular polished rim 1 and above this rim there may be an outwardly extending flange 3 forming a cover for the container. The cover fits on the container by means of flange In which may be provided with holes 4 which serve as ventilators through which the unwinding of the fibers can be observed and which also have the effect of less ening the weight of the device.

The modification illustrated in Fig. 3 is essentially similar to that of Figs. 1 and 2 with the exception that pot-shaped protective container I is in the form of a true cylinder, that conical core 2 and cone 5 are conical in their upper portions'and cylindrical in their lower portions. The upperpart of core 2 is likewise polished and ribs I I may be provided to hold back layers of threads which might possibly be lifted to that height together with the unwound thread. In a special form of the apparatus the inner. cone may also be coated with velvet, fur or similar material.

The container can advantageously be made of aluminium, but another material, such as for example an artificial resin, may be used. The side .wall'of the container can even consist simply of a wire network or of wires joined together or of strips of sheet metal. This simple form is especially to be recommended when the winding is placed in the container covered with a protecting sleeve. The container can be made in one piece with the conical core.

e process of unwinding a wound thread in the-new apparatus is as follows: The wound body, which may becovered with a protecting sleeve, is placed over the conical core, and inserted into the pot; The structure of the wound body is protected against mechanical disturbance by the wall of the pot or the protecting sleeve and by the core which practically fills the interior of the wound body. The inner end of the thread is then threaded through the hole in the top of the conical cover, which is thereupon placed over the core. The thread can now be drawn from the beginning to the end without interruption through the perforation in the upper cone.

The fur-lining of the conical cover retains any loops of thread which are prematurely released from the wound body anda smooth running-oil is obtained. If. spirals of thread loosened in the container or on the interior of the wound body invention has the advantage of a substantially tensionless withdrawal of the thread. At the= same time any tension inside the winding is prevented. In this manner any undue stretching 0f the threads, any jamming of the loops of threads and any friction between the loops of threads is avoided. Finally the manipulation of the apparatus is essentially simplified, since the tensioning of the windings is unnecessary.

What we claim is:

1. Apparatus for unwinding unsupported wound bodies of threads, for example ring cops or spinning cakes or the like, which apparatus comprises a pot-shaped protecting container adapted to receive the winding of the threads, a polished core in the center of the said container having a conical upper part extending out of said pot-shaped protecting container, a detachable cover on said pot-shaped container having a conical extension adapted to fit over said conical core, while leaving enough space between said conical core and the inner wall of said con-' ical extension for the thread to pass freely therethrough, said conical extension of said cover being perforated at its apex and having a polished annular rim at its base.

2. Apparatus for unwinding unsupported wound bodies of threads, for example ring cops or spinning cakes or the like, which apparatus comprises a pot-shaped protecting container adapted to receive the winding of. threads, a. polished core in the center of said container having a conical upper part extending out 01' said pot-shaped protecting container, the lower part of said conical core being cylindrical; annular ribs provided in said cylindrical lower part, a detachable cover on said pot-shaped container having a conical extension adapted to fit over said conical core while leaving enough space between said conical core and the inner wall of said conical extension for the thread to pass freely therethrough, said conical extension of said cover being'perforated at its apex and having a polished annular rim at its base.

ADOLF WILLEKE. WHII'EILM ELLER. 

